Additional file 3: Supplementary Figure 1. Principal components analysis (PCA) of CpG loci. PCA of CpG methylation for loci covered at 5x read depth in all samples, with colors differentiating low and ambient pH conditions and shape indicating maturation stage. The PCA did not demonstrate any clear separation of samples by treatment. Supplementary Figure 2. Matrix of pairwise scatter plots for 5x CpG loci. Data is presented for CpG covered at > 5x across all samples. Pearson correlation coefficients for each pairwise comparison are presented in the upper right boxes.